Thomas Rhys Thomas is alleged to have bitten the Castres Olympique back row, Thomas Caballero (No 6), in the 67th minute of the match in contravention of Law 10.4 (m).
The complaint was made by match Citing Commissioner, Dave Guyan (England).
Rod McKenzie (Scotland) has been appointed as the independent Judicial Officer for the disciplinary hearing which will take place in London on Wednesday 20th January 2016.
Law 10.4 (m) Biting
Under World Rugby's Sanctions for Foul Play, Law 10.4 (m), Biting, carries the following sanction entry points - Low End: 12 weeks; Mid-Range: 18 weeks; Top End: 24 to 208 weeks.
